Laser Machining Head Insulation with Metal Inner Shielding
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Solution Overview
Problem
Current laser machining heads face issues with radiation resistance and reliable distance measurement due to inadequate insulation and mechanical fragility, leading to high maintenance and replacement costs.
Innovation Solution
A laser machining head design featuring a metal inner shielding for radiation protection and thermal management, combined with a plastic outer insulation, ensures effective shielding and precise capacitance measurements through electrical separation, using a metal sleeve for enhanced durability and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plastic is used for outer insulation to provide electrical insulation, then electrical insulation is improved, but radiation resistance deteriorates
Solution Approach 1:
The patent combines plastic outer insulation with ceramic inner insulation to create a composite structure. The plastic provides electrical insulation while the ceramic provides radiation resistance, resolving the contradiction between these two requirements through material composition rather than choosing one material alone.
2Object-affected harmful factors
If ceramic is used for insulation to provide radiation resistance, then radiation resistance is improved, but mechanical strength deteriorates
Solution Approach 1:
The patent creates a composite structure where ceramic provides radiation resistance and plastic provides mechanical strength and flexibility. This composite approach allows the system to benefit from the radiation resistance of ceramic without suffering from its brittleness, as the plastic matrix absorbs mechanical stresses.
3Object-affected harmful factors
If additional inner shielding is added to protect against radiation, then radiation protection is improved, but device complexity increases
Solution Approach 1:
The patent integrates radiation protection into the insulation structure itself by using a composite of plastic and ceramic materials, rather than adding a separate inner shielding component. This approach provides radiation protection while maintaining structural simplicity and avoiding additional assembly complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a radiation-resistant, maintenance-free, and cost-effective laser machining head with reliable distance measurement capabilities, minimizing thermal stresses and maintenance costs while maintaining precise measurement accuracy.
Implementation Method 1
this distance measurement takes place capacitively, that is to say the capacitance formed by the laser machining head or the sensor part and by the workpiece is measured
Implementation Method 2
This usually takes place via a frequency measurement of the resulting resonant circuit
Data Source
AI summary
The invention relates to a laser machining head for a laser machining machine, comprising a mount (2) for a sensor part (3) formed from electrically conductive material, an outer insulation part (4) made from electrically insulating material, preferably made from plastic, for electrical shielding and an inner insulation part (5) inserted within the outer insulation part (4) as radiation shield, wherein the inner insulation part (5) is formed from metal and is electrically insulated from the sensor part (3).